Transmission oil is a mixture of base oil and additives with very good anti-wear and anti-scoring properties and good stability to thermal oxidation. Manual transmissions use a variety of oils regular motor oil, heavyweight hypoid gear oil or even automatic transmission fluid in some cases. Your owner’s manual will tell you what your transmission calls for.
The key function of transmission oil is to lubricate hypoid gears in manual and automatic transmissions for cars and trucks.
There are 2 types of transmission fluids.
There are MTF (Manual Transmission Fluids) for manual transmissions and differential gears and ATF (Automatic Transmission Fluids).
Transmission fluid is a slippery liquid that acts as a lubricant for all of the moving parts inside your transmission.
It’s important to regularly check the transmission fluid level between service intervals. Letting your car run low on transmission fluid can cause the transmission to shift improperly – or even not at all. It also can harm the internal parts of your transmission, which will not be properly lubricated. Unfortunately, you may not hear any noises or have other clues that your transmission is low on fluid, until it’s too late.
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